R.I.P. battery?

my iBook battery (3 yrs old) has started giving a lot less life than the glory days of yore when I would get a good 4 hours out of it. Now a distant memory.
Is there anything I can do to revive it or do I just buy another?
Many thanks for any replies..

Hi Demstifyme,
You might want to look at...
Knowledge Base Document #86284 about Calibrating your computer's battery for best performance
About Notebook Batteries
Lithium-ion Batteries
Knowledge Base Document #500666 has Tips for maximizing your PowerBook and iBook battery charge
Jon
Mac Mini 1.42Ghz, iPod (All), Airport (Graphite & Express), G4 1.33Ghz iBook, G4 iMac 1Ghz, G3 500Mhz, iBook iMac 233Mhz, eMate, Power Mac 5400 LC, PowerBook 540c, Macintosh 128K, Apple //e, Apple //, and some more...  Mac OS X (10.4.5) Moto Razr, iLife '06, SmartDisk 160Gb, Apple BT Mouse, Sight..

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